http://www.89ip.cn/

urls = ['http://www.ip3366.net/free/']
request = WebRequest()
for url in urls:
    r = request.get(url, timeout=10)
    proxies = re.findall(r'<td>(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})</td>[\s\S]*?<td>(\d+)</td>', r.text)
    for proxy in proxies:
        yield ":".join(proxy)